This movie shows the "yolk flash". The apparently whole-embryo calcium pulse appears to initiate over a widespread area of blastoderm, possibly earliest...

Prewave pulse and axial wave. This prewave pulse appears to arise predominantly from the animal pole region, others however appear to emerge nearly...

A wave spreading around the blastoderm margin and then up the primary body axis is shown at 50x real time. The wave begins on the right side of the...

Pre-wave pulse (PWP). The apparently whole-embryo calcium pulse appears to initiate (the PWP region on the wave graphs) over a widespread area of blastoderm...

Imaging sequence of calcium waves spanning from late shield state to 95% epiboly. This sequence covers 3 h of development and is running at 150x real...

Imaging sequence of calcium waves from 95% epiboly to 12-somite state. Note that bidirectional waves predominate throughout this sequence. The waves...

Three calcium waves propagating around the blastodisc margin. This sequence covers 28 min of development around 90% epiboly.The movie represents a...

A single bidirectional calcium wave. The prewave pulse lasts only for 0.6 sec in this time-lapse sequence. This sequence covers 350 sec of development...

A unidirectional calcium wave arising form the left side. The wave originates from a hot spot on the left side of the blastoderm margin and intensifies...

10 Tailbud pulses over 105 min at 8-12 somite stages. This is the latter part of the 95% epiboly to 12-somite sequence flipped vertically for clearer...